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The spit bar of Calahonda (Granada), together with that one from Roquetas (Almería), constitutes one of the best examples in south-eastern Spain. Its development is associated to the different Holocene sea-level oscillations occurred since the last eustatic maximum. Progradation of these spit bars occurs under certain climatic conditions, which have repeated cyclically during Holocene times, giving place to different morphosedimentary units recognized along the whole southern peninsular littoral. In Calahonda, the main development of the spit bar is associated to the second progradation phase, which takes place since ca. 2,400 years.La flecha litoral de Calahonda (Granada) constituye, junto con la de Roquetas (Almería), uno de los mejores ejemplos del sureste peninsular. Su desarrollo está asociado a las distintas oscilaciones del nivel del mar ocurridas durante el Holoceno, una vez alcanzado el máximo eustático. En general, se ha visto que la progradación de estas flechas se produce en unas condiciones favorables determinadas, que se han repetido cíclicamente durante el Holoceno, y han quedado reflejadas como diferentes unidades morfosedimentarias, cuyo patrón de formación es reconocible en todo el sur peninsular. En Calahonda, el principal crecimiento de la flecha litoral está asociado a la segunda fase de progradación, desarrollada en los últimos 2.400 años.

4 páginas, 1 figura, 1 tabla., [ES] La flecha litoral de Calahonda (Granada) constituye, junto con la de Roquetas (Almería), uno de los mejores ejemplos del sureste peninsular. Su desarrollo está asociado a las distintas oscilaciones del nivel del mar ocurridas durante el Holoceno, una vez alcanzado el máximo eustático. En general, se ha visto que la progradación de estas flechas se produce en unas condiciones favorables determinadas, que se han repetido cíclicamente durante el Holoceno, y han quedado reflejadas como diferentes unidades morfosedimentarias, cuyo patrón de formación es reconocible en todo el sur peninsular. En Calahonda, el principal crecimiento de la flecha litoral está asociado a la segunda fase de progradación, desarrollada en los últimos 2.400 años., [EN] The spit bar of Calahonda (Granada), together with that one from Roquetas (Almería), constitutes one of the best examples in south-eastem Spain. Its development is associated to the different Holocene sea-Ievel oscillations occurred since the last eustatic maximum. Progradation of these spit bars occurs under certain climatic conditions, which have repeated cyclically during Holocene times, giving place to different morphosedimentary units recognised along the whole southem peninsular littoral. In Calahonda, the main development of the spit bar is associated to the second progradation phase, which takes place since ca. 2,400 years., Este trabajo es una aportación al Proyecto IGCP 437 Coastal environmental change during sea-level highstands y a la INQUA Commission on sea-level changes. Ha sido financiado por los proyectos de la Fundación Areces «Cambio climático y variaciones del nivel del mar», y de la DGES PB98-0265 y PB98-0514.

Doñana Natural Park is a good global example of the sedimentary filling of a broad tidal estuary during the Mid-Late Holocene, after the last postglacial sea-level rise. The timing of this rise is not well defined yet in the Gulf of Cádiz, since the oldest evidence of coastal sedimentation, located at the right bank of the mouth of the old Guadalquivir Estuary, dates back to ca. 5,000 years ago. The first evolutionary stages of the embayment indicate an obvious marine influence, dominated by waves and storms from the SW. Since ca. 4,000 years ago, protection provided by the growing coastal spit barrier of Doñana favored the development of a sheltered marsh dominated by tides and fluvial currents. About 2,200 years ago, since the time Romans controlled the area, the estuary was dominated by marshlands with a wide lagoon at its mouth (Lacus Ligustinus), and the current landscape of Doñana started to form. The evolution of the last 2,000 years includes the quick and continuous growth of coastal barriers by longshore drift, the origin of the present-day marshland landscape and the development of dune fields migrating inland towards the wetlands.

This paper deals on intrashell and intershell aspartic acid racemization ratio variation in samples recovered from a UC 2200BP dated bar of "El Rompido" (Huelva) spit bar complex. From valves of Ostrea sp., Glycymeris sp. and Panopea sp. disc shaped subsample sets from the beack to the ventral border were obtained via drilling with a hollow diamond circular cutter. Statistical analysis of the results revealed good agreement with predicted variation coefficient in Ostrea and Glycymeris, being possible that Panopea sample would be composed by two different ones because of reworking

This paper deals on intrashell and intershell aspartic acid racemization ratio variation in samples recovered from a UC 2200BP dated bar of "El Rompido" (Huelva) spit bar complex. From valves of Ostrea sp., Glycymeris sp. and Panopea sp. disc shaped subsample sets from the beack to the ventral border were obtained via drilling with a hollow diamond circular cutter. Statistical analysis of the results revealed good agreement with predicted variation coefficient in Ostrea and Glycymeris, being possible that Panopea sample would be composed by two different ones because of reworking